Heat exchanger is a device that some heat transfer from hot fluid to a cold fluid, also known as a heat interchanger . The heat exchanger is an indispensable device for achieving heat exchange and transmission in the chemical production process. The detachable plate heat exchanger is a kind of high-efficiency and energy-saving heat exchanger preparation. It has many advantages such as high heat transfer efficiency, light weight, small footprint, and easy maintenance. It can be made of non-metallic materials such as graphite, ceramics, glass, and stainless steel, titanium, tantalum, zirconium, and other metal materials. However,It’s fragile, bulky, poor thermal conductivity and other shortcomings if using the graphite, ceramics, glass and other materials to make it.It’s very expensive to made by titanium, tantalum, zirconium and other rare metals. stainless steel can’t be resistant to much corrosive media and produce intergranular corrosion.